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-rw-r--r--libavformat/matroskadec.c3
1 files changed, 2 insertions, 1 deletions
diff --git a/libavformat/matroskadec.c b/libavformat/matroskadec.c
index 5a79712f05..6478d8484a 100644
--- a/libavformat/matroskadec.c
+++ b/libavformat/matroskadec.c
@@ -1304,7 +1304,8 @@ static int matroska_read_header(AVFormatContext *s, AVFormatParameters *ap)
st->codec->extradata = extradata;
st->codec->extradata_size = extradata_size;
} else if(track->codec_priv.data && track->codec_priv.size > 0){
- st->codec->extradata = av_malloc(track->codec_priv.size);
+ st->codec->extradata = av_mallocz(track->codec_priv.size +
+ FF_INPUT_BUFFER_PADDING_SIZE);
if(st->codec->extradata == NULL)
return AVERROR(ENOMEM);
st->codec->extradata_size = track->codec_priv.size;